No problem, we've got 3986 and 1728 to multiply
3986 × 1728 = 1728 × (3986)
+ 1728 × 6 resulting in 10368
+ 1728 × 80 yielding 138240
+ 1728 × 900 producing 1555200
+ 1728 × 3000 that is equal 5184000

= 6887808
